Lead-free pinscreen device for 3D top fish imaging
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Solution Overview
Problem
Conventional lead impression blocks used in drilling operations are inefficient and require multiple runs to obtain accurate imprints of a top fish in a wellbore, leading to increased downtime and costs due to their reliance on weight for impression creation and inability to generate clear imprints of varying fish shapes.
Innovation Solution
A lead-free pinscreen imprint device with a tubular body and vertically adjustable pins, equipped with a 3D laser image scanner and conveyance mechanism, which allows for real-time data collection and precise imaging of the top fish surface without the need for additional weight, enabling accurate shape and orientation determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional lead impression blocks are used, then the device can obtain an imprint of the top fish, but multiple runs are required leading to increased downtime and costs
Solution Approach 1:
The patent replaces the conventional mechanical lead impression block system with an electronic imaging system comprising a 3D laser scanner, camera, and light source. This substitution eliminates the need for multiple physical runs by capturing accurate 3D images of the top fish surface in a single operation, thereby resolving the contradiction between imaging accuracy and time loss.
2Measurement precision
If conventional lead impression blocks rely on weight for impression creation, then the device can create imprints, but the imprints are unclear for varying fish shapes
Solution Approach 1:
The patent employs dynamically adjustable components including movable pins that can be positioned at different heights and a controllable light source that can be directed at various angles. These dynamic elements allow the imaging system to adapt to different fish shapes and sizes, capturing clear 3D images regardless of the fish configuration, thus resolving the contradiction between measurement precision and adaptability.
Solution Approach 2:
The system changes operational parameters such as light source intensity, camera exposure settings, and pin positions to optimize imaging for different fish shapes. By dynamically adjusting these parameters, the system maintains high measurement precision across varying fish configurations without requiring multiple runs.
3Loss of information
If conventional lead impression blocks are used, then the device can determine fish position and shape, but the process requires additional weight and multiple operations
Solution Approach 1:
The patent merges multiple functions into a single integrated imaging device that combines the 3D laser scanner, camera, light source, and pin array system. This consolidation captures complete fish surface information in one operation, eliminating the need for separate weighting and imprinting operations, thereby reducing both information loss and operational complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The lead-free pinscreen imprint device reduces non-productive time and enhances the accuracy of top fish surface imaging, allowing for real-time data collection and minimizing the need for multiple runs, thus reducing operational costs and improving drilling efficiency.
Implementation Method 1
a three-dimensional (3D) laser image scanner disposed in the housing at a location that is immediately above the pinscreen portion. The 3D laser image scanner is configured to scan the scanning surface and identify any depth changes in the scanning surface.
Data Source
AI summary
A lead-free pinscreen imprint device for retrieving at least one imprint of a topmost surface of a fish located in a wellbore may include a housing with a central aperture that extends along a section of a central axis thereof. The lead-free pinscreen imprint device may include a pinscreen portion disposed in the housing. The pinscreen portion may include various pins that are disposed along a vertical axis that is parallel to the central axis. The pinscreen portion may include an imprint surface that faces in a downward direction and a scanning surface that faces in an upward direction. The lead-free pinscreen imprint device may include a three-dimensional (3D) laser image scanner disposed in the housing at a location that is immediately above the pinscreen portion. The 3D laser image scanner may be configured to scan the scanning surface and identify any depth changes in the scanning surface.